EP2141539B1 - Dispositif de correction de flou et appareil optique - Google Patents

Dispositif de correction de flou et appareil optique Download PDF

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Publication number
EP2141539B1
EP2141539B1 EP08739214.8A EP08739214A EP2141539B1 EP 2141539 B1 EP2141539 B1 EP 2141539B1 EP 08739214 A EP08739214 A EP 08739214A EP 2141539 B1 EP2141539 B1 EP 2141539B1
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EP
European Patent Office
Prior art keywords
detection
vibration reduction
center
lens group
driving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08739214.8A
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German (de)
English (en)
Other versions
EP2141539A4 (fr
EP2141539A1 (fr
Inventor
Junichi Omi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon Corp
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Nikon Corp
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Filing date
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Publication of EP2141539A1 publication Critical patent/EP2141539A1/fr
Publication of EP2141539A4 publication Critical patent/EP2141539A4/fr
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Publication of EP2141539B1 publication Critical patent/EP2141539B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/681—Motion detection
    • H04N23/6812—Motion detection based on additional sensors, e.g. acceleration sensors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/685—Vibration or motion blur correction performed by mechanical compensation
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0007—Movement of one or more optical elements for control of motion blur
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2217/00—Details of cameras or camera bodies; Accessories therefor
    • G03B2217/005—Blur detection

Definitions

  • the present invention relates to a vibration reduction apparatus and an optical apparatus which have a mechanism for correcting optical image blur of an optical system.
  • a vibration reduction apparatus is an apparatus which reduces image blur caused by vibrations and the like, by shift-driving in a plane orthogonal to the optical axis a portion of the imaging optical system.
  • a vibration reduction apparatus As such a vibration reduction apparatus, a apparatus is known where a pair of electromagnetic actuators are disposed separated by 90o about the optical axis of a vibration reduction lens group, and which carry out driving of the lens in their respective directions (for example, refer to Patent Document 1).
  • the vibration reduction apparatus disclosed in Patent Document 1 is provided with a baffle to mechanically prevent rotation about the center of gravity of a moveable portion to which a lens group for image vibration reduction is fixed.
  • a baffle is mainly a mechanical manufactured product and thus will have microscopic manufacturing errors, and as a result of these errors, is unable to completely suppress rotation of the image vibration reduction lens group. Therefore, the microscopic rotations which could not be completely suppressed destabilize the driving control of the image vibration reduction lens group of the vibration reduction apparatus.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2003-57707
  • Japanese Patent Publication No. H07-168235 discloses a vibration reduction apparatus in accordance with the preamble of claim 1.
  • the problems to be solved by the present invention are to provide a vibration reduction apparatus and optical apparatus which can stably control the driving of a vibration reduction optical system.
  • the present invention solves the above problem by a vibration reduction apparatus in accordance with claim 1.
  • a vibration reduction apparatus is provided with a center of gravity adjusting member which is disposed at a moving portion, such that the center of gravity position of the moving portion can brought close to the crossing point of each detection direction of the first detection portion and the second detection portion, and thus detection errors of the first detection portion and the second detection portion detected due to rotational motion about the center of gravity of the moving portion can be reduced, and the driving of the moving portion can be stably controlled.
  • FIG. 1 is a block diagram showing the overall constitution of a camera which is an embodiment of the optical apparatus according to the present invention.
  • Fig. 2 is a cross sectional drawing showing the lens barrel portion of the camera according to the present invention.
  • each of the drawings of Fig. 2 and the later described Figs. 3 to 5 use in common the direction of the ray A1 from the photographic subject as the X axis, and the ray A2 orthogonal thereto as the Z axis. Further, the Y axis is in a direction orthogonal to the X direction and the Z direction.
  • the camera 10, as shown in Fig. 1 is a digital camera constituted by a control portion 11, a display portion 12, a storage portion 13, an operating portion 14, a gyro sensor 15, and a lens barrel portion 20.
  • the control portion 11 is a CPU which controls and oversees each portion of the camera 10, and further, also has the function of controlling the vibration reduction mechanism portion 30 in response to an output signal of the gyro sensor 15 and the position detector 35 of the vibration reduction mechanism portion 30 provided at the later explained lens barrel portion 20.
  • the display portion 12 is a liquid crystal display which displays the operation contents, and the images photographed by the camera 10.
  • the storage portion 13 is a memory which stores the image data photographed by the camera 10 and the operation settings.
  • the operating portion 14 is a plurality of buttons for operating, including a release switch for executing the operation of photography and the setting of the photographic conditions and the like of camera 10. For example, it can carry out the operation of the later explained shutter aperture diaphragm portion 29 (refer to Fig. 2 ), and the zoom operation of driving the later explained third lens group 24 and the fifth lens group 26 (refer to Fig. 2 ) and the like.
  • the gyro sensor 15 is a sensor which detects movement of the camera 10 (hand shaking vibrations) in terms of angular velocity.
  • the gyro sensor 15 detects hand shaking vibrations imparted to the camera 10 at the time of photographing, and based on the detected value, drives the vibration reduction mechanism portion 30 provided in the later described lens barrel portion 20, and corrects image blur caused by the hand shaking vibrations.
  • the gyro sensor 15 is constituted of two angular velocity sensors, and each of these angular velocity sensors detects the angular velocity of the pitching (rotation about the Y axis) and yawing (rotation about the Z axis) of the camera 10.
  • the lens barrel portion 20 has a first lens group 21, a prism 22, a second lens group 23, a third lens group 24, a fourth lens group 25, a fifth lens group 26, a low pass filter 27, a CCD 28, a shutter aperture diaphragm mechanism portion 29, and a vibration reduction mechanism portion 30.
  • the first lens group 21 is an objective lens on which the ray A1 from the photographic subject is incident, and is the lens group closest to the photographic subject among the lens groups in the lens barrel portion 20.
  • the prism 22 is a right angle prism which bends the direction of the incident ray A1 by a 90o angle, fully reflecting the ray A1 in the +X direction outgoing from the first lens group 21, bending it 90o, and outputs it to the second lens group 23 as ray A2 in the -Z direction.
  • the second lens group 23 is disposed at a position where the ray A2 outgoing from the prism 22 is incident.
  • the third lens group 24 is disposed at a position where the ray A2 outgoing from the second lens group 23 is incident, and can be moved along the Z direction by a driving mechanism which is not shown.
  • the fourth lens group 25 is disposed at the moveable frame 32 of the later described vibration reduction mechanism portion 30 and is provided at a position where the ray A2 outgoing from the third lens group 24 is incident.
  • the fifth lens group 26 is disposed at a position where the ray A2 outgoing from the fourth lens group 25 is incident, and in the same way as the third lens group 24, can be moved along the Z direction by a driving mechanism which is not shown.
  • the low pass filter 27 is provided between the fifth lens group 26 and the CCD 28, and is a crystalline birefringent plate which removes high frequency components from the ray A2 outgoing from the fifth lens group 26, and outputs it to the CCD 28, and prevents the occurrence of interference fringes (Moire) in the photographic subject image.
  • the CCD (charge coupled apparatus) 28 is a solid state image sensor onto which the light ray A2 outgoing from the low pass filter 27 is incident, and based on the incident light ray A2, it can convert a photographic subject image to an electronic image signal.
  • the shutter aperture diaphragm mechanism portion 29 is provided at the incident side of the fourth lens group 25 of the vibration reduction mechanism portion 30, and is provided with a aperture portion which regulates the intensity of the photographic subject light passing through the lens barrel portion 20, and a shutter portion which adjusts the exposure time of exposing the photographic subject light on the CCD 28.
  • the vibration reduction mechanism portion 30 is provided between the third lens group 24 and the fifth lens group 26, and is a mechanism which drives the fourth lens group 25 in a plane orthogonal to the optical axis of the ray A2, and reduces image blur caused by movement (hand shaking vibrations) caused by movement of the camera 10.
  • Fig. 3 is a top view showing the vibration reduction mechanism portion 30 provided in the lens barrel portion 20.
  • Fig. 4 is a drawing showing the B-B cross section of Fig. 3 .
  • the vibration reduction mechanism portion 30 as shown in Fig. 3 and Fig. 4 , has a fixed frame 31, a moveable frame 32, a support portion 33, a VCM (voice coil motor) 34, a position detector 35 and a balancer 36.
  • the vibration reduction mechanism portion 30 drives the VCM 34 based on the detection values of the gyro sensor 15 and the position detector 35, and by moving the fourth lens group 25 fixed to the moveable frame 32 relatively with respect to the fixed frame 31 in a plane orthogonal to the optical axis of the ray A2 (the XY plane), can reduce image blur caused by movement (hand shaking vibrations) of the camera 10.
  • the vibration reduction mechanism portion 30, based on the detection value of the gyro sensor 15, carries out control reducing the image blur caused by movement (hand shaking vibrations) of the camera 10, and with the position detector 35, controls the relative positions of the fourth lens group 25 fixed to the moveable frame 32 and the fixed frame 31.
  • the fixed frame 31 is provided with a hole for passing the ray A2 outgoing from the fourth lens group 25 in its center portion, and is a fixed member which is fixed to the lens barrel portion 20. Further, at the periphery of the hole of the face (front face) of the +Z direction side of the fixed frame 31, the later explained coil portion 34-2 of the VCM 34, and the detector portion 35-2 of the position detector 35 are provided.
  • the moveable frame 32 is a member which is moveable in the XY plane, with the fourth lens element 25 fixed to its center, and moves relatively with respect to the fixed frame 31. Further, at the periphery of the fourth lens group 25 of the face (hereafter, rear face) of the -Z direction side of the moveable frame 32, the later explained magnet portion 34-1 of the VCM 34, and the magnet portion 35-1 of the position detector 35 are disposed.
  • the support portion 33 is a rolling mechanism constituted of a steel ball 33-1, a ball receiving portion 33-2 hollowed in the form of a cup, and a level portion 33-3, and is disposed at three places between the fixed frame 31 and the moveable frame 32, so as to surround the fourth lens group.
  • the support portion 33 by the ball receiving portion 33-2 provided at the front face of the fixed frame 31, and the level portion 33-3 provided at a position facing the ball receiving portion 33-2, on the rear face of the moveable frame 32, moveably holds the steel ball 33-1.
  • the moveable frame 32 while being maintained at a fixed position in the Z direction with respect to the fixed frame 31, can be freely moved in the XY plane.
  • the VCM 34 has a magnet portion 34-1 and a coil portion 34-2, and is a non-contact type electromagnetic actuator which can respond with high speed.
  • the VCM 34 is disposed between the position detector 35 and the balancer 36, and is provided at two locations with linear symmetry with respect to the X axis which passes through the center OR of the fourth lens group 25, and its driving directions (arrow C1 and arrow C2) are inclined by 45o with respect to the X direction. Further, the crossing point D of each of the driving directions (arrow C1 and arrow C2) of the VCM 34 is disposed to be on the X axis which passes through the center OR of the fourth lens group 25. By the above disposition, the VCM 34 can relatively move the moveable frame 32 in the XY plane with respect to the fixed frame 31.
  • the magnet portion 34-1 is a magnetic circuit having a permanent magnet 34-1a and a yoke 34-1b, and is disposed at the rear face of the moveable frame 32.
  • the coil portion 34-2 is a magnetic circuit having a coil 34-2a which is an armature coil and a yoke 34-2b, and is disposed at a position facing the magnet portion 34-1 of the moveable frame 32, at the front face of the fixed frame 31.
  • the coil portion 34-2 by making a given electric current flow in the coil 34-2a positioned in the magnetic field between the coil portion 34-2 and the magnet portion 34-1 disposed at a facing position, generates a driving force of the VCM 34.
  • the position detector 35 is constituted by a magnet portion 35-1 and a detector portion 35-2, and is a detector for detecting motional changes of position of the moveable frame 32 by detecting a change in the magnetic field between the magnet portion 35-1 and the detector portion 35-2.
  • the position detector 35 is provided at two locations with linear symmetry with respect to the X axis which passes through the center OR of the fourth lens group 25, and its detection directions (arrow D1 and arrow D2) are inclined by 135o with respect to the X direction. Further, the crossing point (control center C) of each of the detection directions (arrow D1 and arrow D2) is disposed to coincide with the center OR of the fourth lens group 25. By the above disposition, the position detector 35 can detect the position in the XY plane of the center OR of the fourth lens group 25 fixed to the moveable frame 32.
  • the magnet portion 35-1 is a magnetic circuit having a permanent magnet 35-1a and a yoke 35-1b, and is disposed at the rear face of the moveable frame 32.
  • the detector portion 35-2 has a Hall element 35-2a and a yoke 35-2b, and is disposed at a position facing the magnet portion 35-1 of the moveable frame 32, at the front face of the fixed frame 31.
  • the detector portion 35-2 detects changes in the magnetic field due to a movement amount of the moveable frame 32 by the Hall element 35-2a positioned in the magnetic field between the detector portion 35-2 and the magnet portion 35-1 disposed at a facing position.
  • the balancer 36 is a weight member divided into two parts, which are respectively disposed between the magnet portions 34-1 of the two VCM's 34 provided at the rear face of the moveable frame 32, and the fourth lens group 25, and makes the position of the center of gravity G1 of the moveable frame 32 to which the magnet portion 34-1 of the VCM 34, the magnet portion 35-1 of the position detector 35 and the fourth lens group 25 are fixed, coincide with the center OR of the fourth lens group 25 and the control center C of the position detector 35.
  • the balancer 36 by making the above center of gravity G1, the control center C of the position detector 35, and the position of the center OR of the fourth lens group 25 coincide, allows stable control of the vibration reduction mechanism portion 30.
  • the balancer 36 is formed of a material having a larger specific gravity than the permanent magnet 34-1a of the VCM 34 and the permanent magnet 35-1a of the position detector 35, for example tungsten, which allows the balancer 36 to be efficiently disposed in a limited space of the moveable frame 32.
  • Fig. 5 is a drawing showing the change in the center of gravity position by disposing the balancer 36 at the moveable frame 32.
  • the moveable frame 32 in the state in which the magnet portion 34-1 of the VCM 34, the magnet portion 35-1 of the position detector 35, and the fourth lens group 25 are fixed thereto is called the moving portion.
  • the magnet portion 34-1 of the VCM 34 and the magnet portion 35-1 of the position detector 35 on the moveable frame 32 are disposed more towards the -X direction side than the center OR of the fourth lens group 25, and therefore when the balancer 36 is not provided, as shown in Fig. 5A , the position of the center of gravity G2 of the moving portion is at a position further towards the - X direction side than the center OR of the fourth lens group 25.
  • Fig. 6 is a drawing explaining the relationship between the positions of the center of gravity of the moving portion and the control center of the position detector, and the detection errors of the position detector.
  • the magnet portion 34-1 of the VCM 34 and the magnet portion 35-1 of the position detector 35 provided on the moving frame 32, as explained above, are disposed further along the -X direction than the center OR of the fourth lens group 25 and thus, if the balancer 36 is not provided at the moving portion (refer to Fig. 5A ), as shown in Fig. 6A , the position of the center of gravity G2 of the moving portion will be further along the -X direction than the control center C of the position detector 35. Because of this, as shown in Fig.
  • the position detector 35 when the moving portion rotates by a rotation amount ⁇ about the center of gravity G2 (arrow B), the position detector 35 will detect the detection errors ⁇ K1 and ⁇ K2 at the detection point M of the Hall element 35-2a of the detector portion 35-2 fixed to the fixed frame 31. These detection errors ⁇ K1 and ⁇ K2 are detected in the detection directions (D1 and D2) even if there is no translational movement and thus, they become a factor in the reduction of the accuracy of the vibration reduction control of the vibration reduction mechanism portion 30.
  • the detection errors ⁇ K1 and ⁇ K2 are approximately 9.2 ⁇ m, and this contributes to the unstable factors in the vibration reduction control system.
  • the balancer 36 by disposing the balancer 36 at the moving portion (refer to Fig. 5B ), as shown in Fig. 6C , the center of gravity G1 of the moving portion and the control center C of the position detector 35 are made to coincide, thus the above detection errors are reduced.
  • the moving portion as shown in Fig. 6D , rotates by the rotation amount ⁇ (arrow C) about the center of gravity G1, the position detector 35 will detect the detection errors ⁇ K3 and ⁇ K4 but these are very small and have almost no effect on the control system of the vibration reduction mechanism portion 30.
  • the detection errors ⁇ K3 and ⁇ K4 are about 0.5 ⁇ m, which is a very small amount with respect to the above described detection errors ⁇ K1 and ⁇ K2, which prevents instability in the vibration reduction control.
  • the center OR of the fourth lens group 25 also coincides with these, thus it is possible to prevent changes in the characteristics of the ray A2 passing through the fourth lens group 25 even if the moving portion rotates about the center of gravity G1.
  • the camera of the present embodiment has the following effects.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Studio Devices (AREA)

Claims (5)

  1. Dispositif de réduction de vibration (30) prévu avec :
    une partie fixe (31),
    une partie mobile (25, 32, 34-1, 35-1) ayant un système optique de réduction de vibration (25) et qui est adapté pour se déplacer dans un plan perpendiculaire à un axe optique (OR) du système optique de réduction de vibration, relativement par rapport à la partie fixe,
    une première partie de détection (35) qui est adaptée pour détecter un mouvement dans une première direction de détection (D1) de la partie mobile par rapport à la partie fixe,
    une deuxième partie de détection (35) qui est adaptée pour détecter un mouvement dans une deuxième direction de détection (D2) de la partie mobile par rapport à la partie fixe,
    un poids (36) disposé au niveau de la partie mobile de manière qu'une position de centre de gravité (G1) de la partie mobile coïncide approximativement avec un point de croisement (C) d'une ligne suivant la première direction de détection (D1) dans la première partie de détection et d'une ligne suivant la deuxième direction de détection (D2) dans la deuxième partie de détection,
    une première partie d'entraînement (34) qui est adaptée pour déplacer la partie mobile par rapport à la partie fixe dans une première direction de mouvement (C1), et
    une deuxième partie d'entraînement (34) qui est adaptée pour déplacer la partie mobile par rapport à la partie fixe dans une deuxième direction de mouvement (C2), la première partie d'entraînement et la deuxième partie d'entraînement étant disposées de manière qu'un point de croisement (D) d'une ligne suivant la première direction de mouvement (C1) dans la première partie d'entraînement et d'une ligne suivant la deuxième direction de mouvement (C2) dans la deuxième section d'entraînement soit séparé d'une distance prédéterminée par rapport à la position de centre de gravité (G1) de la partie mobile, et de manière que le système optique de réduction de vibration (25) soit interposé entre la première partie d'entraînement et la deuxième partie d'entraînement,
    caractérisé en ce que :
    la première partie d'entraînement et la deuxième partie d'entraînement sont disposées entre le poids (36) et un détecteur de position (35) comprenant la première partie de détection et la deuxième partie de détection.
  2. Dispositif de réduction de vibration (30) selon la revendication 1, dans lequel :
    le système optique de réduction de vibration (25) est disposé de manière que son centre d'axe optique coïncide avec le point de croisement (C) de la ligne suivant la première direction de détection (D1) dans la première partie de détection (35) et de la ligne suivant la deuxième direction de détection (D2) dans la deuxième partie de détection (35), et avec la position de centre de gravité (G1) de la partie mobile.
  3. Dispositif de réduction de vibration (30) selon la revendication 2, dans lequel le poids (36) est constitué d'un matériau ayant un plus grand poids spécifique qu'un aimant utilisé pour la première partie de détection (35) et la deuxième partie de détection (35), et/ou la première partie d'entraînement (34) et la deuxième partie d'entraînement (34).
  4. Dispositif de réduction de vibration (30) selon l'une quelconque des revendications 1 à 3, dans lequel
    le poids (36) est constitué d'une pluralité d'éléments.
  5. Dispositif optique comprenant un dispositif de réduction de vibration (30) selon l'une quelconque des revendications 1 à 4.
EP08739214.8A 2007-04-09 2008-03-28 Dispositif de correction de flou et appareil optique Not-in-force EP2141539B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007101578A JP5109450B2 (ja) 2007-04-09 2007-04-09 ブレ補正装置及び光学機器
PCT/JP2008/056096 WO2008126702A1 (fr) 2007-04-09 2008-03-28 Dispositif de correction de flou et appareil optique

Publications (3)

Publication Number Publication Date
EP2141539A1 EP2141539A1 (fr) 2010-01-06
EP2141539A4 EP2141539A4 (fr) 2010-12-29
EP2141539B1 true EP2141539B1 (fr) 2016-10-05

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US (1) US8446672B2 (fr)
EP (1) EP2141539B1 (fr)
JP (1) JP5109450B2 (fr)
WO (1) WO2008126702A1 (fr)

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JP6840940B2 (ja) 2016-05-26 2021-03-10 株式会社リコー 画像表示ユニット、画像投影ユニット、及び画像投影装置
JP2018013442A (ja) 2016-07-22 2018-01-25 株式会社リコー 位置検出装置、位置検出方法、画像生成ユニット及び画像投影装置
KR101804921B1 (ko) * 2016-10-20 2018-01-10 (주) 엠디펄스 Ois 카메라 모듈
JP2018072383A (ja) 2016-10-24 2018-05-10 株式会社リコー 画像投影装置、画像投影装置の制御方法および画像投影装置の制御プログラム
JP6958062B2 (ja) 2016-11-11 2021-11-02 株式会社リコー 画像生成ユニット、画像投影装置及びヒートシンク
JP2018091992A (ja) 2016-12-02 2018-06-14 株式会社リコー 画像生成装置、および画像投影装置
JP6903902B2 (ja) 2016-12-06 2021-07-14 株式会社リコー 画像生成装置、および画像投影装置
JP6816485B2 (ja) 2016-12-06 2021-01-20 株式会社リコー 画像生成装置、および画像投影装置
JP2018194587A (ja) * 2017-05-12 2018-12-06 オリンパス株式会社 位置検出装置及びこれを適用する像振れ補正装置
JP7000878B2 (ja) 2018-01-26 2022-01-19 株式会社リコー 画像投影装置及び画像投影方法

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JP5109450B2 (ja) 2012-12-26
US8446672B2 (en) 2013-05-21
WO2008126702A1 (fr) 2008-10-23
US20100033820A1 (en) 2010-02-11
EP2141539A1 (fr) 2010-01-06

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